Pneumatic cushion



J. 1. HALLORANL PNEUMATIC CUSHION.

APPLlcATloN FILED 1AN. 25. 1921.

1,409,374. Patented Mar. 14, 1922.

JOHN J'. HALLORN, OF DALY CITY, CALIFORNA.

PNEUMATIC CUSHION.

Specification of Letters Patent. Patnd Mal; 14C, 1922,

Application led January 25, 1921. Serial No. 439,779.

T 0 all whom t may concern.'

Be it known that l, JOHN J. HALLORAN, a citizen of the United States, and a resident of Daly City, county of San Mateo, and State of California, have invented a new and useful Pneumatic Cushion, of which the following is a specilication.

The present invention relates to improvements in cushions, and its object is to bringr about the cushioning eiiect by'constructive features rather thanhy the qualities of the material used. v

A further object is to produce a cushion that will require a minimum oi material, while the range of materials adaptedto be used in its construction is practically limitless.

A further object is to provide cushion` that will adapt itself to a wide range of uses, whether it be used as a single unit to ease the slamming of a door, or as a combination of many units designed to give resiliency to the running board of an automobile, a mat or the heel of a shoe.V

I accomplish these objects by means ot' the mechanism illustrated in the accompany ing drawing, in which Figure l represents a plan view ci my cushion; Figure 2 is a sectional view along any diametrical line Voit Figure l; `Figure 3 shows a plurality of my cushions secured to the heel of a shoe; and Figure 4 a plural! ity of my cushions secured to the running board of an automobile.

Referring to the .drawing more particularly, the principal parts of mycushion (l) are the base (2) and the cover (3). The base (2) may he made of any solid material, such as metal, wood, stone, glass, bone, hard rubber, compressed composition and so on. In the illustration it is shown to be of circular shape, but I wish to point out that that the cover firmly foots on the base and is prevented by the base from spreadingl laterally.

The cover `(2) may be of any flexible niaterial and is shown in the drawing as folA lowing, in its cross-section, the lines or the arc of a circle. This, however, is only one.VV outline among many possible ones, the prin# cipal feature being that it is arched and adapted to offer a certain lateral resistance to vertical pressure. Its thickness may vary somewhat, lbut should bear a certain proportion to its other dimensions. t should be thick enough, not only to support its own weight, but also toy offer some resistanceV to vertical pressure and to return to itsoriginal position'when the pressure is released.

I claim:

1. An anti-slipping device comprising' a rigid base and an arched cover of flexible material secured over it so as to form a reboundinpair chamber with the same.l V

2. An anti-slipping device 'comprising a rigid base and aV plurality of arched covers JoHN ,i Harmens., p 

